EP2358931B1 - Oberwalze für ein streckwerk - Google Patents

Oberwalze für ein streckwerk Download PDF

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Publication number
EP2358931B1
EP2358931B1 EP09737377.3A EP09737377A EP2358931B1 EP 2358931 B1 EP2358931 B1 EP 2358931B1 EP 09737377 A EP09737377 A EP 09737377A EP 2358931 B1 EP2358931 B1 EP 2358931B1
Authority
EP
European Patent Office
Prior art keywords
bearing
top roller
centre piece
axle centre
outer ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09737377.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2358931A1 (de
Inventor
Wilhelm Birkenmaier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Saurer Spinning Solutions GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saurer Spinning Solutions GmbH and Co KG filed Critical Saurer Spinning Solutions GmbH and Co KG
Publication of EP2358931A1 publication Critical patent/EP2358931A1/de
Application granted granted Critical
Publication of EP2358931B1 publication Critical patent/EP2358931B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/74—Rollers or roller bearings

Definitions

  • the present invention relates to a top roller for a drafting system, comprising an axle center piece and two journal bearings with bearing bolts, which are arranged on opposite sides in the axle center piece and on the free end of which at least one roller bearing is arranged, which serves to support an outer ring.
  • the invention further relates to a method for producing and assembling an upper roller.
  • a top roller of the type mentioned above is from the German published application DE 20 61 433 A1 respectively the DE 20 61 434 A1 known.
  • the DE 20 61 433 A1 respectively the DE 20 61 434 A1 describes an upper roller, which has a tubular middle piece, in which journal bearings are fastened by means of two separate thru axles.
  • the axle center piece is made from a pipe section by non-cutting shaping.
  • top rollers have so far only been used for special designs of top rollers, for example if the outer diameter of the bearing is to be only slightly larger than the axle diameter in order to be able to apply the largest possible cross-section of the rubber cover with a small radial installation space.
  • double-sided bearing seals individual seal designs are required. This individual design of the top rollers is not suitable for use with a large variety of types.
  • an upper roller for fine or coarse spinning machines which is made up of an axle center piece, bearing bolts and journal bearings as well as the associated roller bearings.
  • the axle center piece can be formed in one or two parts, consisting of a holding zone and the pin bearing the pressure roller. These have parallel annular roller raceways.
  • These journal bearings / roller bearings can be designed differently, in particular using different rolling elements.
  • the object of the present invention is to simplify an upper roller for a drafting system in such a way that the production and the assembly of the top roller can be standardized and automated.
  • each top roller different axle centerpieces are available, which are adapted to the respective different pitches and / or saddle shapes of top roller support and loading arms, that holes are arranged on both sides in the axle centerpieces for receiving the bearing bolts , with all the bearing devices required for storage being arranged on the bearing pin, so that when assembling the top roller, the selection of axle center pieces for adaptation to different pitches and / or saddle shapes can be made independently of the bearing pins used with roller bearings and outer ring.
  • the simplified and adapted design of the axle center piece is such that all variation features of the division and saddle shape are integrated into the axle center piece on a drafting system, which enables flexible and versatile use on different drafting system types without the need to replace or adapt the bearing bolt during manufacture and the assembly of the top roller.
  • the bores on both sides in the axle center piece for pressing in the bearing bolts always have a uniform depth. This results in an always the same press stroke for pressing the bearing bolts into the bores of the axle center piece.
  • the diameter of the axle center piece can always correspond at the end to the largest occurring diameter of the axle center piece.
  • the largest occurring diameter of the axle center piece is preferably in the overlap region of the axle center piece and the outer ring. In this way, the ring area to be sealed between the axle center piece and the outer ring is minimized.
  • the diameter and the length of the stepped zones of the axle center piece serving to insert the top roller into the saddle of the top roller support and loading arm can vary according to the diameters and widths of the different types of saddle shapes.
  • the transitions of the diameter gradations on the center axis of the axle should be uniform. This measure makes it possible to easily implement the variety of saddle shapes required for adapting to different types of drafting systems, the production being particularly economical from the point of view of production economy.
  • the further developments of the top roller listed above are used to construct the top rollers in such a way that they can be produced with a large number of identical parts and with the least possible set-up, processing and assembly costs in a large number of variants with a high degree of flexibility and with a high degree of flexibility.
  • the axle center piece according to the invention always has the largest occurring diameter of the entire type spectrum as the standard diameter, at least in the area of overlap with the bearing pin.
  • the axle center piece for type-specific saddle shapes has those in the central position according to diameter and width Centerpiece sections that interact with specific handlebars and top strap holders of various drafting systems.
  • the standardization of the axle center piece with regard to the diameter in the overlap area of the axle center piece and the outer ring also reduces the sealing on the saddle side to a single embodiment, which simplifies the parts disposition and requires only one assembly device.
  • the uniform design of the transitions of the diameter gradations on the axle center piece enables the variety of saddle shapes to be met in a simplified manner.
  • the uniformly designed transitions of the gradations in diameter on the center section of the axle enable the variants of the saddle shapes to be produced with the same tools using rapidly convertible machine control programs with the least possible effort.
  • Another advantage is that the overlap area of the axle center piece contributes to a good stabilization of the bearing on the bearing pin, in particular due to the small spacing from the rolling bearing facing the axle center piece.
  • the bearing bolts can preferably have a unit length regardless of the axis center piece used. In connection with the uniform depth of the bores in the axle center piece, the bearing pin always has the same press fit length. In this way, the retrofitting effort during manufacture and in particular during assembly is reduced for the entire range of types of top rollers.
  • the press-in stroke for the bearing pin is always the same, so that in the event of a division-related change, the press-in unit only has to be moved on one side of the assembly system in accordance with the changed division.
  • the bearing bolts have a uniform diameter. This simplifies the manufacture in that that the rod-shaped starting material for all bearing bolts always has the same dimensions regardless of the design of the top roller for a specific drafting system type.
  • the offset can always be at least 1.5 times the outer diameter of the bearing pin. The determination of this value has proven to be particularly advantageous for the various axle center pieces that are used, as far as the stability of the connection of the bearing pin and the axle center piece is concerned.
  • the bearing pin and the outer ring each have spherical rolling element raceways which are arranged symmetrically to the radial center plane of the outer ring.
  • the flange heights of the rolling element raceways of the bearing pin and the outer ring are between 5% and 15% of the rolling element diameter.
  • a sealing lip and a cover are advantageously provided in the journal bearing, by means of which the at least one rolling bearing is sealed from the surroundings.
  • the sealing lip and the Lids have the same outer diameter and the same outer contour.
  • the outer bearing can have radial recesses on its inside facing the bearing pin, which are used to fasten the sealing lip or the cover.
  • the sealant can also be standardized due to the standardization of the components connected to the sealants, the axle center piece and the outer ring.
  • the axle center piece is provided with a central section adapted to these different pitches and / or saddle shapes, while the end sections of the axle center piece, which serve to receive the bearing bolts, with regard to of their outer diameter and the bore depth are carried out in a standardized manner, with all the bearing devices required for storage being arranged on the bearing pin, so that when the top roller is assembled, the selection of the axle center piece for adaptation to different pitches and / or saddle shapes is independent of the bearing pin used with roller bearings and outer ring can be carried out.
  • an upper roller 1 is shown in a schematic representation, which comprises an axle center piece 2 and two journal bearings 3.
  • the respective journal bearing 3 has a bearing pin 4, with which the journal bearing 3 can be pressed into a bore 5 in the axle center piece 2, and at least one roller bearing 6, which serves to support an outer ring 7.
  • Fig. 1 are two rolling bearings, the rolling elements 6 and cages 14, arranged on the free end of the bearing pin 4.
  • a sealing lip 8 is provided on the side facing the axis center piece 2, while a closed cover 9 is arranged on the side facing away from the axis center piece 2.
  • a lubricant supply can be provided between the roller bearings 6 in the interior of the journal bearing 3.
  • the cover 9 or the sealing lip 8 is fastened to the journal bearing 3 by radial recesses 11, which are inserted on the inside of the outer ring 7 and into which the cover 9 or the sealing lip 8 engage.
  • the sealing lip 8 is cylindrical and has a U-shaped cross section, so that the sealing lip 8 rests in the axial direction both on the inside of the outer ring 7 and on the surface of the axle center piece 2, as in FIG Fig. 1 shown.
  • the axle center piece 2 according to the Fig. 1 has a central section 10, which in its axial extent S1 corresponds to specific handlebars or top strap holders of drafting systems. In the overlap area of the axle center piece 2 and the journal bearing 3, the axle center piece 2 has a section which, regardless of the variation of the center section 10, always has the largest diameter D for the various saddle shapes and divisions, and which is standardized for all axle center pieces 2.
  • the axle center piece 2 optionally has a coating as protection against corrosion and wear.
  • the axis centerpiece 2 is preferably produced with larger pitches greater than / equal to 80 mm from a rod material with a tolerance-accurate diameter which corresponds to the standardized diameter D of the axis centerpiece 2 in the overlap region.
  • the axle center piece 2 can optionally be manufactured from a tube with a standardized outer diameter, which is only reworked in areas with narrow dimensional tolerances, such as in the holes 5 for receiving the bearing pin 4 which has a uniform length.
  • the manufacture of the axle center piece 2 and the mounting of the journal bearing 3 on it is simplified in that the bore depth B of the bore 5 is standardized, as a result of which the insertion depth B of the bearing pin 4 into the axle center piece 2 is always the same regardless of the dimensions of the outer ring 7.
  • Fig. 2 shows an upper roller 1 'with a larger pitch than in Fig. 1
  • the structure is identical to that in Fig. 1 illustrated embodiment of the top roller 1.
  • the difference between the top roller 1 according to Fig. 1 and the top roller 1 'according to Fig. 2 exists only in the length of the axis center piece 2 ', in particular in the axial extent S2 of the center section 10 'of the top roller 1', which corresponds to the adaptation to a different pitch and / or saddle shape of another drafting system or drafting system types, and the longer configuration of the outer ring 7 '.
  • the offset depth B is also identical to that in Fig. 1 described variant.
  • the bearing pin 4 has a uniform length L and a uniform diameter d.
  • the length L and the uniform diameter d of the bearing pin 4 are the same for all center axles 2, 2 'regardless of their axial extent S1, S2.
  • the bearing pin 4 is non-stepped and has only two spherical raceways 12 ground into the solid, which serve to guide the rolling elements 6.
  • the outer ring 7 also has spherical raceways 14 on its inside.
  • radial recesses 11 are introduced into the inside of the outer ring 7, which serve to arrange the sealing means.
  • the outer ring 7 has a straight, non-stepped inner surface.
  • the outer ring 7 is designed to be completely symmetrical with respect to its central plane M, so that no oriented feed is required during assembly.
  • the rim heights of the raceways 12, 14 of the bearing pin 4 and the outer ring 7 lie in a range of 5% -15% of the rolling element diameter 6.
  • the arrangement of the raceways 12, 14 on the bearing pin 4 and the outer ring 7 is selected such that the bearing pin 4 on the side facing the cover 9 has a maximum protrusion which corresponds to 0.25 times the diameter d of the bearing pin 4, while on the side facing the sealing lip 8 the protrusion is at least 1.5 times the diameter d of the bearing pin 4 corresponds.
  • the symmetrical shape of the outer ring 7 and the bearing pin 4th ensure a very simple and safe parts supply in the manufacturing and assembly process.
  • their straight shapes and smooth surfaces reduce the risk of dirt and swarf sticking from the assembly steps preceding the assembly steps and promote the cleaning process at the end of the parts production.
  • journal bearing 3 The structure and design of the journal bearing 3 are such that the necessary bearing devices are integrated in the journal bearing 3.
  • axle center piece 2 is designed exclusively in such a way that the upper roller 1 can only be adapted to different pitches and / or saddle shapes of an upper roller support and loading arm during its manufacture and assembly by exchanging the axle center piece 2, 2 '.
EP09737377.3A 2008-11-13 2009-10-22 Oberwalze für ein streckwerk Active EP2358931B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008057155A DE102008057155A1 (de) 2008-11-13 2008-11-13 Oberwalze für ein Streckwerk
PCT/EP2009/007551 WO2010054742A1 (de) 2008-11-13 2009-10-22 Oberwalze für ein streckwerk

Publications (2)

Publication Number Publication Date
EP2358931A1 EP2358931A1 (de) 2011-08-24
EP2358931B1 true EP2358931B1 (de) 2020-01-15

Family

ID=41818882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09737377.3A Active EP2358931B1 (de) 2008-11-13 2009-10-22 Oberwalze für ein streckwerk

Country Status (8)

Country Link
EP (1) EP2358931B1 (es)
JP (1) JP5575141B2 (es)
CN (1) CN102209807B (es)
DE (1) DE102008057155A1 (es)
ES (1) ES2773004T3 (es)
RU (1) RU2553571C9 (es)
TW (1) TWI548791B (es)
WO (1) WO2010054742A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015113551A (ja) 2013-12-13 2015-06-22 村田機械株式会社 ドラフトローラの内側筒体、ドラフトローラのローラ部、ドラフトローラ、ドラフト装置、及び空気紡績機
CN104313738A (zh) * 2014-10-14 2015-01-28 周盈裕 一种改进的纺织用牵引罗拉
CN110804776B (zh) * 2019-11-13 2021-06-18 杭州诚天旺丝绸有限公司 一种改进型纺织罗拉
CN113388931B (zh) * 2021-06-03 2022-07-01 东台市润生纺机专件有限公司 一种高精度的棉纺粗纱机罗拉

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
US2251031A (en) * 1940-07-22 1941-07-29 Whitin Machine Works Drawing roll coupling
US2601134A (en) * 1949-01-10 1952-06-17 Albert M Guillet Interchangeable roller neck for textile fluted rolls
NL90181C (es) * 1950-05-30
SU97130A1 (ru) * 1951-12-26 1953-11-30 А.С. Великовский Выт жной прибор дл изучени процесса выт гивани волокон
DE2061434A1 (en) 1970-12-14 1972-06-22 Spindelfabnk Sussen, Schurr, Stahlecker & Grill GmbH, 7334 Sussen Draw rollers with sleeve between outer rings to support - elastic cladding material
DE2061433A1 (en) 1970-12-14 1972-06-22 Spindelfabnk Sussen, Schurr, Stahlecker & Grill GmbH, 7334 Sussen Common bearing ring - with inner profiles to hold bearing races used in spinning unit draw frame
DE2140800C3 (de) * 1971-08-14 1980-10-16 Industriewerk Schaeffler Ohg, 8522 Herzogenaurach Loswalze für Streckwerke von Spinnmaschinen
DE2148253C3 (de) * 1971-09-28 1980-05-29 Industriewerk Schaeffler Ohg, 8522 Herzogenaurach Oberwalzenzwilling für Streckwerke an Spinnmaschinen
JPS52135628U (es) * 1976-04-10 1977-10-15
JPS52158123U (es) * 1976-05-20 1977-12-01
DE3920020A1 (de) * 1989-03-07 1990-09-13 Fritz Stahlecker Streckwerk fuer eine spinnmaschine
JP3438584B2 (ja) * 1998-05-08 2003-08-18 株式会社豊田自動織機 紡機におけるトップエプロンクレードル
DE19907905C2 (de) * 1999-02-24 2002-06-20 Skf Textilmasch Komponenten Walze für Riemchenstreckwerke
CN2741994Y (zh) * 2004-07-22 2005-11-23 陈兆南 纺机双滚道上罗拉轴承
JP4278679B2 (ja) * 2006-12-26 2009-06-17 ジヤトコ株式会社 遊星歯車装置

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
CN102209807A (zh) 2011-10-05
CN102209807B (zh) 2013-11-13
RU2011123670A (ru) 2012-12-20
TWI548791B (zh) 2016-09-11
ES2773004T3 (es) 2020-07-09
RU2553571C2 (ru) 2015-06-20
TW201026916A (en) 2010-07-16
DE102008057155A1 (de) 2010-05-20
JP2012508828A (ja) 2012-04-12
RU2553571C9 (ru) 2016-01-20
WO2010054742A1 (de) 2010-05-20
JP5575141B2 (ja) 2014-08-20
EP2358931A1 (de) 2011-08-24

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